Cop holder



NOV. 11, 1930. SVLADEK ET AL COP HOLDER Filed March 28, 1928 H a V 5] i: mull l 277 1/ 57,

fzzoerwm loam J Slade/ 0, Henry G dflaeraaw,

Patented Nov. 11, 1930 UNITEDIIISTA'TES'L PATENT oFFIc LOUIS J. SLAIDEK, or CHICAGO, AND HENRY G. ennnnson, or SYCAMOR-E, rnnrnors cor HOLDER Application filed. arches, 1928. Serial No. 265,441. 9

Our invention relates in general to improvements in cop or bobbin carriers such as are commonly used to support a bobbin or spool of yarn on a braiding machine in position to be unwound and fed into the machine, and has more particular reference to a yarn feeding device for use in connection with the holder on which the cop or bobbin is mounted to deliver its yarn to the braiding machine under the control of asuitable tension device.

tially constant tension and since the tension device can only accommodate a limited length of slack thread before becoming congested and inoperative, it is of importance to provide means for rapidly and positively locking the bobbin holder against rotation whenever too much thread is fed from the cop to the tension device, in order to prevent tangling of the yarn or stoppage of the machine through premature tripping of the machine stopping device. I V I r I The principal object of our invention is the provision of an improved-feed control wherein the latching of the cop holder takes place in a positive mannerand without delay as soon as the tension device receives an excess .of

thread.

latching action is unimpaired by wear of the cooperating latching parts. V

Stilla'nother important object'of the invention is the provisionof a simplified latch member fora rotatable cop holder which may be manufactured cheaply" and easily and which provides a simple and rugged latch construction.

parent as the invention is more clearly understood from thefollowing description which i when taken in connection with the accompanying drawings discloses a preferred embodiment thereof.

In the-drawings 1 Fig. 1 isaside elevation of a cop-or bobbin carrier having an improved latching device embodying our invention; 4 i

Fig. 2 is a horizontal cross section taken substantially along line 2 2of Fig.1; and

I Fig. '3 is a perspective view of tlIB'lHlPIOVBd latch keeper for the 'cop latching device.

To illustrate.ourinvention we have shown on the drawings a cop or bobbin holder com prising a tubular sleeve or spindle 11 adapted for insertion within a tube or core 12 upon which the cop or bobbin 13 is wound; The spindle 11 is removably and rotatably mounted upon a stock or shaft 15 and fits snugly within'the core of the bobbin so that when tension is applied to the looseend of the bobbin yarn', the spindle will freelyrotate about its longitudinal axis upon the shaft .15 to unwind the yarn. The shaft 15 is mounted at its base in a pedestal 17, the top of which forms a stepbearing19 for supporting the sleeve 11 in operative position. A latch retaining member or keeper 21, comprising a disc having a centrally located boss 22, providing a hub by which the member 21 may be secured tothe spindle, and having radial open slots 23'formed therein frointhe periphery of the disctoward the'hub and dividing the discinto a plurality of segments 25, is secured'upon the lower end of the spindle and hence is adapted to rotate therewith. Each segment 25 is Warped or twisted from the original plane of the disc from. which the member is formed, as shown in Fig. 3, the warping being of such a nature that the trailing edge 61 of each segment 25 is offset upwardly, that is to say, towards the bobbin 13 which is mountedonthe spindle above the slotted latch member 21'. The preferred tance slightly in excess of the'gaugie or thickness of thestock'from Which the member is V formed.

' The pedestall'l'is supported upon a base 27 having a portion 29 adaptedto detachably engage a co-operating socket formed in the braiding machine to support the bobbin hold' er inplace thereon. 4 r g r *The yarn tension devlce .eomprisesa weight 33 slidably; mounted on a rod '31 extending upwardly from the base 27 in a direction subencez numeral 5.31, is conducted from the bobbin; 1'3and; passes through theapert-ure 35' and beneath the Weight 33, extending in a trough or roove 55. formed therein. Thence the a D Y ,1 1 thread-passesaiupwardly and through a thieae giudei compris ng an, aperture formed; at

the top of the rod 81: andsoeen terstghe braidingrmaehine. w v 1 Z; A latch member or-detent 3'7- comprising a at. part, ;forined of sheet: metal, having a latching tongue 39,'is pi'votally mounted-on a pin.

41, formed on the pedestal 17, andis secured in place between a shoulder 42 formed in the pedestal atthe base ofthe pin and a Washer held in place on the pin 41 by means of a split pin 45. The latch member or ,detent 37 is h adapted to reciprocally rotate in a vertical 'planebet-Ween twopositions, inone of which th'e latching tongue '39 is arranged to en gagethelatch member 21;, beingreceivablein, any of the slottedportionsQi-i; and Soto-lock thespindle against-rotation. In this positionthe tongue, 39 engages the leading edge 7 59 ofthe keeper'segment 25 and prevents ro-c tation" of other bobbin spindle. The position of tl1edete11t37 isdetermined by means o'f'a rod47-the lower end l9 ofwhich is Wrapped around and pivotally engages apin 51 se cured in the body ofth'e deteiit37. The'rod extends upwardly parallelling the Weight carrying rod 31' and is Wrapped atits upper end 52 about the rod31, above the weight 33.

' This upper wrapped endisslidablealon'g the rod 31 and'is normally, supportedin the posi- 'Zi tion shownin Fig. lot the drawings by the Weight'33 which is supported in place boythe [thread tension; In-this; position, the.,idetent is held in unlatched position, and thecop holder being free to-rotate, dQGS'SQ Whenever the. braiding machine applies. tensionto the free end of the yarn 5,3. .Rotationofthecop however unwinds an exce'ssof yarn. and the Weight 3.3 slides downtherod 31in ordeirtro take up theslacliof the yarn andcmaintain constant thetensioni on; the yarn. iedto the braiding machine. lVhen the Weight falls, thesupport is removed beneath the upper end 52' of the rod 47. This allows the rod to drop and the detent 37 to rotate, in a clock-Wise direction in Fig. 1, into lockingposition. Further operation of the braiding of the braiding. machine uses up the slack of the yarn and raises theweight 38 which engages'the end 5.2a ofthe dete nt operating rod 7 and 1 again releases the locking device al lowing further rotation of the-cop. Thelatch ordetent SZ' is PIOYldBClWllZlI an off-set ton'gue62 arranged to engage'the pedestal 17 when thedetent hasbeenrotated tofully unlatched position in order to provide a stop for limitingithe unlatching movement ofthe'deten t.

The tension device. is-adaptedto act-asa trip; actuating-a; stoppingdevice for the bmidingzmachine, If'theyarn 5V3 breaks, the 7 Weight supporting tension issreleased the weight 33*(1101385'00 the base of the rod :31; at

which: point it aetua-tes a machine stopping "device to prevent further .ppera'tion of the braiding machine. Itki apparent-that'pre metre a s oppage" of the-machine may be caused if and when yarn is-fdrawn from, the p eopf faster than it. is taken into: the-braiding machine; 1 Undersuchconditions, thegslacle accommodated by the tension-device'becomes so great that; theweight' 33 is lowered to the will" be: stopped withoutia. breakage of the yamihiwing:'occurnedn The opengslot'sf and ra id a d :POS-itive' latching, action making possible; the feeding 15 1 the yarn. through the tensioni device. uniformly and; preventing prematurestoppage of thevbr-aiding' nachine 1 scalloped iormofthelatchkeeperproyides'a 9.

dneto the overloading of the-tension; devic andthe consequentztripping; of; the stopping a device; 7,

By formi-iigthe radial keeper disc hav ing open slots 23, a, large wearing surface is provided alongithe. leading. edge of the segm i The latohee ee g s eme fi alsojare-rigid 'andare. not easily-bent orzdise' ,torted tothus destroy the accurate, positive andsp'eedy .operat-ionof the latch; Bytwisting the segments25 so that the trailing edges filareofiset away fromthelat'ching tongue 1' 1 'pifthe detent, extreme, rapidity of i sam le thel'ockingderice islob rainedfto the and that otationijofthe ob-bin is s opped im 'ne'diia e y thethread 53 is broken, the, tongue :39 ridingdown the back of the preceding segment and off-the following-segment; I

- Wliat we claim as new and desire to protect'byLettersratent isk P 1.:In a cop carrier having a thread icon-v a 7120 a lmmedlately engag ng the forward edge' 59 trolled deten't and a; thread-rotated spindle, a a

lack member rotatablewith, the spindleand sisk-L '7 arranged; approximate-1y g n er planeperpendicular: to: the axi of: the spindle and; ha ing zmdial slots rte "provide tn-ipping posit on and the braiding mach ne a detent engaging segment-s, said segments being warped, having their trailing edges oil'- set away from the detent an amount equaling at least the thickness of the segments, to facilitate the engagement of thedetent with the leading edge of the following segment.

2. In a cop carrier having a rotatable cop holder, a thread controlled detent adapted to release upon the breakage of thethread to lock the cop holder against rotation, and a keeper mounted on said cop holder, said keeper having the form, approximately, of a disc provided with radial slots adapted to receive the detent when the latter is released, said slots being spaced apart to define latching segments and said segments being twisted between the slots to provide relatively oflset leading and trailing edges and an intermediate cam surface along which the detent may glide, during the closing operation, into the path of the leading edge of the next succeeding segment.

3. In a cop carrier having a thread controlled detent and a thread rotated spindle, a locking member rotatable with the spindle and comprising a disc extending in a plane substantially normal to the axis of the spindle, said disc having radial slots formed therein to define locking segments, said segments having leading and trailing edges and being twisted whereby to relatively ofi-set the said leading and trailing edges and to provide cam surfaces along one of'which the detent may ride during its locking movement to thereby be directed into locking position in the path of the leading edge of the adjacent segment.

In Witness whereof, we have hereunto subscribed our names.

LOUIS J. SLADEK. HENRY G. ANDERSON. 

